Intermittent Fasting and Testosterone Levels: 5 Facts That Will Blow Your Mind

Well, maybe these facts won’t blow your mind, only something like this can do that.

They will, however, make you strongly consider intermittent fasting on a regular basis if you have any interest in naturally optimizing your testosterone levels.

1. In non-obese men, intermittent fasting has been shown to increase LH (luteinizing hormone – a testosterone precursor hormone) up to 67% and overall testosterone 180% with just a single short term fast. The ability to regularly control your LH and T levels with daily fasts can be a powerful tool in your T-boosting toolbox.

2. Testosterone is positively correlated with insulin sensitivity. Because of this, it is smart to skip breakfast – here’s why… the body’s circadian cycle has a natural cortisol spike shortly after waking, and this happens to be the time when most individuals eat breakfast. With fit, or somewhat fit, individuals, the insulin spike with the food intake, along with an already-high insulin sensitivity, and the high levels of circulating cortisol at this time of day, leads to a rapid drop in blood glucose. This triggers what is known as “false hunger,” usually causing an individual to subsequently consume more calories than necessary. By skipping breakfast, you are regulating your blood glucose levels, insulin, and cortisol during the period of the day in which they are most sensitive.

3. Intermittent fasting allows your body a daily opportunity to burn excess body fat for fuel and rid itself of minor toxins before it needs to allocate energy to focus on things like digestion and glycogen synthesis. The quickest way to increase your T is to lose excess body fat. To put it simply, testosterone (both free T and SHBG-bound) levels correlate inversely with common measures of insulin resistance (such as insulin, C-peptide, and HOMA-IR) and body fat levels. The inverse association between testosterone and insulin resistance is mediated by adipose tissue, and independent of SHBG (sex hormone binding globulin). In simple terms: the more body fat you have, the less testosterone you will naturally be able to produce.

4. Intermittent fasting increases levels of a hormone called adiponectin.  This increase in adiponectin during the fast helps improve insulin sensitivity. Adiponectin is so powerful, in fact, that it’s been shown to reverse insulin resistance in mice.

5. With just a 24 hour fast, you can elevate your growth hormone levels by up to 2000%. GH and T levels correlate with one another, both acting anabolically (improving glycogen uptake into the muscles, protein synthesis, and increasing training capacity and tolerance).


These are just 5 awesome benefits of regular IF’ing. You don’t need to be super strict about counting the hours of your fast either; you can experience these benefits by doing something as simple as skipping breakfast and consuming your first meal at lunch time, which also helps with psychological and lifestyle flexibility.

If you fast regularly, have you experienced beneficial increases in your ability to train harder, lose body fat, and increase your T and sex drive?



If you haven’t yet read The TestShock Program, you need to grab yourself a copy, and read it – arm yourself with the exact all-natural testosterone enhancement program used by thousands of men around the world to systematically increase testosterone levels over 1000 ng/dL.


This post was originally written as a guest post by Christopher Walker on


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Christopher Walker

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